Stage 2 remap for the N55-powered BMW M135i (F20). Delivers verified +80WHP and +165LBFT torque on 99 RON fuel with stock intercooler, decat and uprated charge pipe.
Real-world gains backed by before/after dyno proof from our West Yorkshire hub
Optimised for fast road and track day use - no dongles, no subscriptions, no guesswork
Compatible with ITG panel filters, decats, cat-backs and uprated charge pipes
Not a generic N55 file - calibrated specifically for M135i F20 chassis characteristics
